LM5145QRGYRQ1 - Texas Instruments

Manufacturer Part Number

LM5145QRGYRQ1

Manufacturer

Texas Instruments

Introduction

Automotive grade step-down switching controller for efficient power conversion.

Product Features and Performance

Supports wide input voltage range from 5.5V to 75V.

High-efficiency buck topology for step-down conversion.

Frequency switching between 100kHz and 1MHz.

Maximum duty cycle of 99%.

Synchronous rectification for improved efficiency.

Buck regulator with integrated MOSFET drivers.

Phase-control capability for multi-phase operation.

Features soft start and ramp control for smooth power-up.

Programmable current limit for system protection.

Power good indicator for real-time status monitoring.

Thermal shutdown and overcurrent protection.

High operating temperature range of -40°C to 150°C.

Product Advantages

High tolerance for varying input voltages suited for automotive applications.

Flexibility in frequency switching for optimal performance.

Robust thermal performance for high reliability.

Automotive-grade quality complying with AEC-Q100 standards.

Key Technical Parameters

One output phase.

Voltage - Supply (Vcc/Vdd): 5.5V ~ 75V.

Duty Cycle (Max): 99%.

Output: Transistor Driver.

Synchronous Rectifier: Yes.

Operating Temperature: -40°C ~ 150°C.

Quality and Safety Features

AEC-Q100 qualified for automotive applications.

Protection features against overcurrent and overtemperature.

Built-in safety mechanisms for reliable operation.

Compatibility

Compatible with surface mount technology.

Wettable flanks for optical inspection post-soldering.

Application Areas

Automotive power systems.

Industrial power supplies.

Telecommunications equipment.

Product Lifecycle

Active status, not nearing discontinuation.

Replacements or upgrades can be identified with base product number LM5145.

Several Key Reasons to Choose This Product

Optimized for harsh automotive environments.

Configurable switching frequency allows design flexibility.

Scalable to multiple output phases for larger systems.

Integration of multiple control features in one package simplifies design.

Enhanced thermal properties for high-reliability applications.

Surface mount package for easy integration into PCB designs.